If you are using Solaris Live Upgrade on a system that has a Solstice DiskSuite metadevice or Veritas volume, the source boot environment can be a metadevice or volume, but the target boot environment cannot be a metadevice or volume. The inactive boot environment must be a regular slice.
If you have problems upgrading with Veritas VxVM, see System Panics When Upgrading On Veritas VxVm.